623721974806 has 24 divisors (see below), whose sum is σ = 1088370622080. Its totient is φ = 267299735472.

The previous prime is 623721974779. The next prime is 623721974849. The reversal of 623721974806 is 608479127326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3043531 + ... + 3241993.

It is an arithmetic number, because the mean of its divisors is an integer number (45348775920).

Almost surely, 2^623721974806 is an apocalyptic number.

623721974806 is a deficient number, since it is larger than the sum of its proper divisors (464648647274).

623721974806 is a wasteful number, since it uses less digits than its factorization.

623721974806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230548 (or 230541 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 623721974806 in words is "six hundred twenty-three billion, seven hundred twenty-one million, nine hundred seventy-four thousand, eight hundred six".